AccuWeather.com - Williamson, IA
- Weather information including fifteen-day weather forecast, radar and satellite images, and current conditions.
- http://www.accuweather.com/forecast.asp?zipcode=50272&partner=

City-Data.com: Williamson, Iowa
- Profiles housing, population demographics, jobs, weather and climate tables. Contains a list of area hospitals, schools, airports, radio and TV broadcast stations, charts and maps.
- http://www.city-data.com/city/Williamson-Iowa.html

Williamson Local News: Topix
- Local, regional, and statewide news collected from diverse sources on the web.
- http://www.topix.com/city/williamson-ia

Wikipedia: Williamson, Iowa
- Encyclopedia article features geography and demographics of this community in Lucas County.
- http://en.wikipedia.org/wiki/Williamson,_Iowa